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  1. Mahdollisuus.Ilkka Niiniluoto, Tuomas Tahko & Teemu Toppinen (eds.) - 2016 - Helsinki: Philosophical Society of Finland.
    Proceedings of the 2016 "one word" colloquium of the The Philosophical Society of Finland. The word was "Possibility".
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  • A Dialectical Approach to Presupposition.Fabrizio Macagno - 2018 - Intercultural Pragmatics 15 (2):291-313.
    This paper advances an approach to presupposition rooted in the concept of commitment, a dialectical notion weaker than truth and belief. It investigates ancient medieval dialectical theories and develops the insights thereof for analyzing how presuppositions are evaluated and why a proposition is presupposed. In particular, at a pragmatic level, presuppositions are reconstructed as the conclusions of implicit arguments from presumptive reasoning, grounded on presumptions of different type and nature. A false (or rather unaccepted) presupposition can be thus represented as (...)
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  • Canon Law.James A. Brundage - 2011 - In H. Lagerlund (ed.), Encyclopedia of Medieval Philosophy. Springer. pp. 189--191.
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  • Avicenna on Syllogisms Composed of Opposite Premises.Behnam Zolghadr - 2021 - In Mathematics, Logic, and their Philosophies. pp. 433-442.
    This article is about Avicenna’s account of syllogisms comprising opposite premises. We examine the applications and the truth conditions of these syllogisms. Finally, we discuss the relation between these syllogisms and the principle of non-contradiction.
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  • Saadia Gaon.Jonathan Jacobs - 2011 - In H. Lagerlund (ed.), Encyclopedia of Medieval Philosophy. Springer. pp. 1171--1173.
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  • Buridan’s Secular Demarcation of Logic.Michael Toppel & Esther Ramharter - 2020 - Philosophia 49 (3):1267-1288.
    In his Tractatus de Consequentiis, the 14th century logician John Buridan states a theorem, which reads like a refutation of Aristotelian Syllogistics. Syllogistics in its usual form, indeed, faces problems when propositions about the divine persons are involved, and, in some cases, when past- or future-tense propositions occur. Buridan offers different ways of overcoming some of these obstacles. The first aim of this paper is to analyse these ways, the second aim is to draw some conclusions concerning Buridan’s understanding of (...)
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  • Thomas Aquinas, Magister Ludi: The Relation of Medieval Logic and Theology.Joshua P. Hochschild - 2020 - Hungarian Philosophical Review 64 (4):43-62.
    This paper seeks to articulate the relationship between medieval logic and theology. Reviewing modern scholarship, we find that the purpose of medieval logic, when it is even inquired about, has proven difficult to articulate without reference to theology. This prompts reflection on the metaphors of logic as a “tool” and a “game”: a tool is not merely instrumental, insofar as it can have its own intrinsic goods and can shape and be shaped by that which it serves; likewise a game, (...)
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  • Between Imagination and Gambling. The Forms of Validity in Scholastic Logic.Miroslav Hanke - 2020 - History and Philosophy of Logic 41 (4):331-351.
    Scholastic logic provided us with a variety of accounts of validity. With some degree of simplification, validity translated into truth-preservation evaluated against a set of worlds and wa...
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  • Every Word is a Name: Autonymy and Quotation in Augustine.Tamer Nawar - 2021 - Mind 130 (518):595-616.
    Augustine famously claims every word is a name. Some readers take Augustine to thereby maintain a purely referentialist semantic account according to which every word is a referential expression whose meaning is its extension. Other readers think that Augustine is no referentialist and is merely claiming that every word has some meaning. In this paper, I clarify Augustine’s arguments to the effect that every word is a name and argue that ‘every word is a name’ amounts to the claim that (...)
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  • Medieval Vs Contemporary Metaphysics and Logic of Intentionality.Andrzej Bułeczka - 2017 - Dissertation,
    This thesis addresses three challenges posed by intentionality - the ability of our mental states and language to be about something - to a logician: an apparent reference to non-existent objects, intentional indeterminacy and the failure of substitutivity of coextensive terms in an intentional context. Since intentionality plays an important role in our everyday reasoning, a proper formal account of it is highly desirable, yet it requires a departure from classical logic. One can modify classical logic and adapt the formal (...)
     
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  • Teoria pura da lógica.Frank Thomas Sautter - 2011 - Natureza Humana 13 (2):85-99.
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  • What Hamblin's Book Fallacies Was About.Jim Mackenzie - 2011 - Informal Logic 31 (4):262-278.
    I finished my undergraduate degree at Monash University and joined Charles Hamblin’s seminar at the University of NSW in March, 1968. Phil Staines from the University of Newcastle joined at the same time, and Vic Dudman was an established member. Hamblin’s book Fallacies would be published in 1970, but the seminar discussions rarely concerned fallacies. This may have been because Hamblin had been working for so long and so closely with those ideas that he was now ready to turn elsewhere. (...)
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  • Paradoxy, Pravdivost a Korespondence V Sémantice Rogera Swynesheda.Miroslav Hanke - 2011 - Organon F: Medzinárodný Časopis Pre Analytickú Filozofiu 18 (1):40-61.
    The present paper is concerned with an exposé of the basic general-semantic theses presented in the tract called “De insolubilibus” written by the 14th century British logician Roger Swyneshed. Swyneshed‘s semantics is analysed as a highly specific theory of truth, correspondence and facts . Swyneshed’s theory revises the correspondence theory of truth and rejects the principle of bivalence, while offering the solution to two different types of paradoxes . As it is usual for theories of this kind, Swyneshed’s semantics has (...)
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  • Ancestor Worship in The Logic of Games. How Foundational Were Aristotle's Contributions?John Woods - 2013 - The Baltic International Yearbook of Cognition, Logic and Communication 8 (1).
    Notwithstanding their technical virtuosity and growing presence in mainstream thinking, game theoretic logics have attracted a sceptical question: "Granted that logic can be done game theoretically, but what would justify the idea that this is the preferred way to do it?'' A recent suggestion is that at least part of the desired support might be found in the Greek dialectical writings. If so, perhaps we could say that those works possess a kind of foundational significance. The relation of being foundational (...)
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  • Mahdollisuus, välttämättömyys ja luodut ikuiset totuudet Descartesin filosofiassa.Forsman Jan - 2016 - In Ilkka Niiniluoto, Tuomas Tahko & Teemu Toppinen (eds.), Mahdollisuus. Helsinki: Philosophical Society of Finland. pp. 120-129.
    Tässä artikkelissa käsittelen Descartesin ikuisten totuuksien välttämättömyyteen liittyvää ongelmaa. Teoksessa Mietiskelyjä ensimmäisestä filosofiasta (1641–1642) Descartes nostaa esiin käsitteen ikuisista totuuksista, käyttäen esimerkkinään kolmiota. Kolmion muuttumattomaan ja ikuiseen luontoon kuuluu esimerkiksi, että sen kolme kulmaa ovat yhteenlaskettuna 180°. Se on totta kolmiosta, vaikka yhtään yksittäistä kolmiota ei olisi koskaan ollutkaan olemassa. Eräät ajattelemieni asioiden piirteet ovat siis Descartesin mukaan ajattelustani riippumattomia. Ikuisia totuuksia ovat ainakin matemaattiset ja geometriset tosiseikat sekä ristiriidan laki. Samoin Descartesin kuuluisa lause “ajattelen, siis olen” lukeutuu ikuisten totuuksien (...)
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  • Supposition and the Fallacy of Figure of Speech in the Abstractiones.Mary Sirridge - 2013 - Vivarium 51 (1-4):147-168.
    I undertake to examine the practice of Richard, Master of Abstractions, with respect to supposition in his dealing with the fallacy of figure of speech. His practice turns out to support the ‘single theory’ account of the theory of personal supposition, as does his treatment of a functional equivalent of simple supposition, but his practice of proposing additional solutions points to changing attitudes with respect to species as separate entities. Questions having to do with material supposition and the like are (...)
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  • Foreknowledge, Free Will, and the Divine Power Distinction in Thomas Bradwardine's De Futuris Contingentibus.Hogarth Rossiter Sarah - unknown
    Thomas Bradwardine was an English philosopher, logician, and theologian of some note; but though recent scholarship has revived an interest in much of his work, little attention has been paid to an early treatise he wrote on the topic of future contingents, entitled De futuris contingentibus. In this thesis I aim to address this deficit, arguing in particular that the treatise makes original use of the divine power distinction to resolve the apparent conflict between God’s foreknowledge on the one hand, (...)
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  • Aristotle on Universal Quantification: A Study From the Point of View of Game Semantics.M. Marion & H. Rückert - 2016 - History and Philosophy of Logic 37 (3):201-229.
    In this paper we provide an interpretation of Aristotle's rule for the universal quantifier in Topics Θ 157a34–37 and 160b1–6 in terms of Paul Lorenzen's dialogical logic. This is meant as a contribution to the rehabilitation of the role of dialectic within the Organon. After a review of earlier views of Aristotle on quantification, we argue that this rule is related to the dictum de omni in Prior Analytics A 24b28–29. This would be an indication of the dictum’s origin in (...)
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  • Term Kinds and the Formality of Aristotelian Modal Logic.Joshua Mendelsohn - 2017 - History and Philosophy of Logic 38 (2):99-126.
    Recent formalizations of Aristotle's modal syllogistic have made use of an interpretative assumption with precedent in traditional commentary: That Aristotle implicitly relies on a distinction between two classes of terms. I argue that the way Rini employs this distinction undermines her attempt to show that Aristotle gives valid proofs of his modal syllogisms. Rini does not establish that Aristotle gives valid proofs of the arguments which she takes to best represent Aristotle's modal syllogisms, nor that Aristotle's modal syllogisms are instances (...)
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  • Presence of the Summulae by Petrus Hispanus and Domingo de Soto in Fray Luis de León’s Theory of Names.Santiago Orrego - 2021 - Veritas – Revista de Filosofia da Pucrs 49:177-203.
    Resumen En este artículo, busco clarificar algunos aspectos de la teoría del nombre de fray Luis de León contenida al comienzo de De los nombres de Cristo mediante una comparación con obras de lógica escolástica, particularmente las Summulae de Pedro Hispano y el tratado homónimo de Domingo de Soto. Procuraré mostrar que dicha teoría solo puede comprenderse acabadamente desde esta perspectiva, sin negar la relevancia de otras, en una medida mayor que la que hasta ahora han presentado los investigadores. Me (...)
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  • A Problem with the Dependence of Informal Proofs on Formal Proofs.Fenner Tanswell - 2015 - Philosophia Mathematica 23 (3):295-310.
    Derivationists, those wishing to explain the correctness and rigour of informal proofs in terms of associated formal proofs, are generally held to be supported by the success of the project of translating informal proofs into computer-checkable formal counterparts. I argue, however, that this project is a false friend for the derivationists because there are too many different associated formal proofs for each informal proof, leading to a serious worry of overgeneration. I press this worry primarily against Azzouni's derivation-indicator account, but (...)
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  • A Comparative Taxonomy of Medieval and Modern Approaches to Liar Sentences.C. Dutilh Novaes - 2008 - History and Philosophy of Logic 29 (3):227-261.
    Two periods in the history of logic and philosophy are characterized notably by vivid interest in self-referential paradoxical sentences in general, and Liar sentences in particular: the later medieval period (roughly from the 12th to the 15th century) and the last 100 years. In this paper, I undertake a comparative taxonomy of these two traditions. I outline and discuss eight main approaches to Liar sentences in the medieval tradition, and compare them to the most influential modern approaches to such sentences. (...)
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  • Medieval Disputationes de Obligationibus as Formal Dialogue Systems.Sara L. Uckelman - 2013 - Argumentation 27 (2):143-166.
    Formal dialogue systems model rule-based interaction between agents and as such have multiple applications in multi-agent systems and AI more generally. Their conceptual roots are in formal theories of natural argumentation, of which Hamblin’s formal systems of argumentation in Hamblin (Fallacies. Methuen, London, 1970, Theoria 37:130–135, 1971) are some of the earliest examples. Hamblin cites the medieval theory of obligationes as inspiration for his development of formal argumentation. In an obligatio, two agents, the Opponent and the Respondent, engage in an (...)
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  • William Heytesbury.John Longeway - 2008 - Stanford Encyclopedia of Philosophy.
  • The Formal and the Formalized: The Cases of Syllogistic and Supposition Theory.Catarina Dutilh Novaes - 2015 - Kriterion: Journal of Philosophy 56 (131):253-270.
    As a discipline, logic is arguably constituted of two main sub-projects: formal theories of argument validity on the basis of a small number of patterns, and theories of how to reduce the multiplicity of arguments in non-logical, informal contexts to the small number of patterns whose validity is systematically studied . Regrettably, we now tend to view logic 'proper' exclusively as what falls under the first sub-project, to the neglect of the second, equally important sub-project. In this paper, I discuss (...)
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  • Obligations, Sophisms and Insolubles.Stephen Read - 2013 - National Research University “Higher School of Economics” - (Series WP6 “Humanities”).
    The focus of the paper is a sophism based on the proposition ‘This is Socrates’ found in a short treatise on obligational casus attributed to William Heytesbury. First, the background to the puzzle in Walter Burley’s traditional account of obligations (the responsio antiqua), and the objections and revisions made by Richard Kilvington and Roger Swyneshed, are presented. All six types of obligations described by Burley are outlined, including sit verum, the type used in the sophism. Kilvington and Swyneshed disliked the (...)
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  • Dialogical Logic.Laurent Keiff - 2010 - Stanford Encyclopedia of Philosophy.
  • Logic and Games.Wilfrid Hodges - 2008 - Stanford Encyclopedia of Philosophy.